Centrifugal machine



June 8 1926.

J. F. MEYER ET AL CENTRIFUGAL MACHINE Flledfgune 2 Patented June 8, 1926.

UNITED STATES PATENT OFFICE( .T`oHANN FRIEDRICH MEYER, or BERLIN, HANS LcxnR, or STA SCHMITZ, or onLnn, GERMANY.

DE, AND CARI.

CENTRIRUGAI. MACHINE.

Application tiled June 2, 1925. -Serial No. 34,488.

This invention has reference to centrifugal drums for the separation of solids from liquids or for the separation of liquids of diiferent spegiic gravities and for equivalent purposes, and it is particularly intended to devise means for eiecting'the rapid opening and closing of the drum and rapid and convenientmeans for cleaning the clearing body of the centrifugal machine. Without mission and discharge pipes of vthe device. In the constructions of centrifugal drums as heretofore suggested, there was the difli-` culty that in the opening of the drum the collars surrounding the admission and discharge pipes had to be withdrawn, which greatly Interfered with the tight closing of the collars or sleeves which, after the closing of the drum, had to be again exactly adjusted. This resulted in the further inconvenience of rather considerable loss of time for the intermittent operation of the/devices referred to and the difficulty of shifting the parts into the propery respective positions for the opening and closing 'of the centrifugal drum.

Now, in accordance withthis invention, the drawbacks referred to in connection with centrifugal drums and the like are overcome by so arranging the different parts, that the top portion of the 'driim may be upwardly moved together with `Athe admission and discharge pipes and with the collars or sleeves surrounding thesame, so that all these parts will be adapted to ,retain their mutual relative positions upon the openiii of the drum. By this means any interferln with the tightening of the drums is avoi ed and the opening and closing procedures, and conseguently also the cleaning of the device, are acilitated, simplified-.and accelerated. After the opening of the drum, it is on the clearing body which remains in the owcr` portion of the drumand may be easily removed therefrom for cleaning purposes. The collars are unchanginglykretained Aon the admission and discharge pi s, respectively, so that there is no lia iity` of any leakage points, occurring in the opening and closing ofthe centrifugal; drum.

- -In the practice of our invention, we r erably proceed by making the upperha f of the stationary casing enclosing' the centrifugal drum tocomprise two sectional portions adapted to be swung on a vertical axis' and interfering with the tight closure of the adwhich 'may' be detachablyucoupled to said ,upperportion and upon which the upper collars are adapted to be supported by means of vertical standards or the like. In orde` to Abe charge pipes from, the clearing body simultaneouslyv with the upper part of the. drum able to raise the admission andtdisthe admission andV discharge ipes are preferably -concentrically ari-ang Ain a continuous sleeve or collar and the connection of the admission pipe with the entrance port of the A clearingsbody is effected by means of a tightcning member which is automatically contracted upon the screwing in position of the COVBI' referred to may be provided with a testing cock for the ypurpose of ascertaining of the drum. The continuous sleeve any possible points of leakage occurring 1n the o eration, the said cock disclosing any possi le leakage of the collars or sleeves existing, if opened at the path of the escapmg hquid. 'These and other advantages and imspecti ortant objectsof the invention will appear as the specification proceeds and from an 1non of the drawings.-

the drawings, a centrifugal drumfac-h vcording to our invention is shown in a referred embodiment by.Way 4of exem li cation, Fig. 1 beingl the entire centri a top a vertical section t rough al drum,` while Fig. 2 isplan view ofthe, centrifugal drum.

The centrifugal drum comprises a container 1 ,with a cover 2 and the screw-threaded annulus 3 connectin these parts'with the intermediary of a pac ng, washer or .the

like. from The drum is operated, for instance, below and ,from any suitable source ofpower, not shown, by means of the suit'- ably supported vertical shaft 4. The drum rotates in a stationary casing 5, the u lhalf of which consists of twoections which may be swung into theopen position on a vertical axis tion t other provi hoodv 6 In the closed posihe sections 7 ,.'fpareconnected to each by bolts, latches *or the like 8 and are agement/with an annular groove 10 ed in the hood 9 and by which the is retained in position. Threel screw bolts 11 are adjustably arranged in the hood 9 adapted/for engagement with an external annul ar vgroove 12. of the cover 2 of fthe mi drum. To the top of the hood 9 three vertical supports 13 are screw-threadedly secured which by means ofthe arms or brackets 14 are connected to the casing 15 of the stuffing boxes. In this casing 15 two stuffing boxes 16 and 17 are disposed one above the other and are separatedby a transversely arranged passage 1S. The lower stuffing box 16 serves as a means ofguiding and tightening the enclosing pipe 19, while the stuffing box 17 surrounds a pipe 20 spacedly and concentrically disposed in thejinterior of the pipe 19. IThe inner pipe 20 Cis connected to the .admission pipe 21 of the clearing body 22 of the drum 1, 2 by the intermediary of any suitable tightening means 23, thus, instance', of a ring of elastic material. The clearing body 22 may consist, for instance,

of a plurality of conical plates or disks kept,

in spaced relation to each other by suitable projections and through which the liquid is VVfor cleaning purposes,

pressed towards-the outlet pipe 19, or this body may be constituted, for example, by a non-subdivided cylindrical body workmg by centrifugal action. Upon effecting the connection of the cover of the drum to the container ythereof the tightening means 23 are tightly packed by the screw-threaded ring 3 of the member 23. The admission of the liquid to be purified is effected y through curved admission pipe 24 which is tightly -secured to the inner pipe 20. The liquid is conducted through the pipe 2O into the 1nterior of the centrifugal drum and, after the clarification has been accomplished, the liquid is conducted away through the space be- .vtween the pipes 19 and 2O and into the passage 18l and thence to theexit pipe 24. The upper endsof the stays or supports 13 are connected to a horizontal ring 26 to. which the yoke 27 is secured.

If the centrifugal drum is to be opened the operation of the drum is discontinued andthe screws 11 areV made to engage the annular groove 12 of the cover 2 of the drum, so as to detachably connect the cover to the hood 9. Thereupon the two sections 7, 7 of the upper half of the stationary casing 5 are swung back, so

`that the'hood 9 becomes exposed, whereupon by means of a windlass, pulley or the like connected to the yoke 27 and, after loosening the threaded ring 3, the cover 2 the drum may be pulled upwardly'together with the threaded ring and the admission and discharffe pipes 19, 20 and the stuffing boxes 16, y127 by thejintermediary of the hood 9 and the stays 13, until the 'container lfof'the drum and the clearing body 22` are freely exposed. The container 1 of the drum may be supported in the casing 5, and v the clearing ,body 22 may then be removed therefrom for cleaning purposes. After Icleaning and replacing the clearing body 22, .652

the cover lof the drum is again loweredupfor f sections 7, 7 of the casing have again been lswung into engagement and have been: made to engage the hood 9. During this entire opening and closing procedure the sleeves or collars 16, 17 are unchangingly retained in theirposition relatively tothe pipes 19, 20, so that their adjustment and` their tight position are not interfered with. On the other hand, the opening and closing merely 'requires al few manipulations and will be rapidly and securely effected.

By the insertion of the tightening member 23 between the admission'ppe 2() and the clearingbody 22 t-he possibility is provided in a very simple manner to automatically detach the clearing body 22 from the admission and discharge pipes and to freely expose the same simultaneously with the raising of the cover of the drum. The admission pipe is connected to the discharge pipe 19 which-in its turn is secured to the cover 2 of the drum, so that all these parts may be lifted off together. In order to be able to withdraw the. stuffing boxes 16, 17 for some purposes and to only re-insert thel same after starting the operation 'of the drum, the arms 14 may be so arranged and constructed as to be displaceable along the stays 13; For this purpose the arms 14 may be provided with a stuffing or 'an in` sertion member 28 of elastic material, such as rubber and with set screws 29. Such a removal of the stuffing boxes may, for instance, be desired in the purification of oils, in order'to produceI easy and smooth starting of the centrifugal drum. By means of the set screws 29 the stuffing boxes may be locked in the upper position. After starting the drum, they are returned to their lower position and secured in this position in which they remainv during the entire operation and in the cleaning periods. Along with the sleeves 16, 17 the curvedadmssion pipe 24 'and the exit pipe 24, 25 may be raised.

In orderto ascertain any possibleleaks .in the stuffing boxes, Va cavity 30 is provided /substantially in the middle of the upper ff stuffing box 17 and communicates with' a cock 31. The cavity 30 is not filled with the lubricating grease, while the remaining cavities ofthe so-called labyrinth tightening member of the stuffing boxes are filled, for instance, with tallow. After the openingof the cock 31, the existence and the location of any possible leakage may be ascertained; if unpurified substance under treatment is ejected from the opened, cock, the leak will be located in the upper portion and the sleeves, while upon the ejection of the purified substance under treatment the lower portionV will show`the leak.

age. l

The centrifugal' drum, according to our invention, may be utilized forthe clarification of a great variety of liquids, thus, for instance, of beer or oil or for the separation of liquids with different specificgravities. 'lhe clearing body 'of the drum may be of v any suitable shape in a-ccordance with the prevailing conditions; it may be in the shape of a set of dishes, for instance, or of other forni and arrangement. The driving of the vertical rotating drum. may be effected in any suitable manner and it should, of course, be understood that the-invention is merely shown in this specification and on the drawing by way. of'illustration of its principle, and it' is not restricted to the particular form, shape and arrangement of parts described and shown byr way of example, but modifications and changes may,

yof course, occur` to be governed by the varying conditions of the application of the invention and without deviating from its cover, and means for selectively and detach-T vably connecting the casingfcover tothecover of thefdrum,`and adapted by the operative insertion of said connecting means to detach the covers with the admission and' eductioi'i means and the stufling boxes as a unit from the drum and the clearing body?.

'2. 'ln a centrifugal machine in combination, .a centrifugal drum, a detachable cover for said drum, aqclearing body suspended tl d dm'ssion means detachabl m le rum a l y rounding the lower part of the drum, a,

fitted onto thepclearing body. and eduction means spacedlysurrounding the admission means and stuling boxes, slidably surround'- ing the admission and eduction means, a surrounding casing for the drum, a detachable cover for the casing supporting the stuiing boxes,l andr/emovable connecting means between the casing-cover and the "cover of the drum. .n 3. ln a centrifugal machine 1n combina.-

tion` a centrifugal-drum, al detachable cover for said drum, releasable ymeans for connecting the drumto said cover, a clearing body suspended in the drum, an admission pipe supported on the clearing body,l eduction means spacedly surrounding the admission pipe and supported on the cover of the drum,A

a casing surrounding the-drum, and a detachzble cover for the casing, stuliing boxes slidingly surrounding the eduction and admission means and supported on the casing cover, outwardly projecting movable means on the casing-cover, engageable with the cover of the drum and adapted to cbnnect the same to a unit, and means for raising the cover of the drum and the casing cover when so connected, with the parts supported thereupon, -and' drivingmeans for the drum.

4. In a centrifugal machine in combination, a centrifugal drum, a detachable cover for said drum, releasable means for connecting the drumto its cover, a clearing body suspended in the drum, an admission pipe t supported on the insertion body, tubular eduction means spacedly and concentrically surrounding the admissionapi'pe and 'sup- I ported on the -cover of the drum, a casing 'surrounding the lower" part of the drum, ya vertically' --partite cover for the casing comprising two laterally swingablesections, slidable stuffing boxes around the eductin means and the admission pipe, supported on the bi-partite cover, outwardly projecting coupling means engaging the cover of thev drumand the casing-cover and projectin therefrom, driving means for the drum, an

means for vertically raising' the covers in the operative position of the coupling with 'the parts supported thereupon. Y 5.I`n a centrifugal machine in combination, a centrifugal drum, a detachable cover thereupon, -releasablev`means for connecting.

the drum to its cover, a clearing body supported inthe interior-of the drum, an admission' pipe supported on the clearing body, tightening means intermediate the clearing body and the drum-cover and in engagement with the latter and adapted to be forced in tight contact withthe clearing bod and theadmission pipe by the operation o the said aipleasable connecting means, tubular educting means surrounding the admission pipe in concentric spaced relation thereto and supported on the drum-cover, a" casing surthe drum, an admission pipe supported onA thev clearing body, a tubular edu'etion member spacedly and substantially concentrically surrounding part of the admission pipe, andfls@ supported on the drum-cover, discharging means laterally, connected to the eduction member, siidable stuiiing boxes for the admission pipe and the ednction member above and below the dlsci'iarging means, a casing around the centrlfug'ai drum, a substantially hood-shaped cover detachably mounted ontion,.a centrifugal drum, a detachable cover there/for, a clearing body supported'within the drum, an admission pipe' detachably itted to the clearing body, an eduction pipe, spacedly and concentrically surrounding the admission pipe and connected to the cover of the drum, a casing surrounding the centrifugal drum, a detachable hood ,on said casing stuting boxes for the admission and eduction pipes supported on the hood, coupling means between the hood andthe drumcover, an empty cavity in `lthe stuiiing box,

surrounding the admission pipe and a test cock connected to said cavity.

8. In a centrifugal maclnne in combination, a centrifugal drum, a detachable cover therefor, a clearing-body supported in the drum, an admission pipe detachably fitted onto the clearing body, an eduction pipe, spacedly and concentrically surrounding the admission pipe and supported by the covel` of the drum, a casing surrounding the centri t'ugal drum, a detachable hood on said casing, a detachable connecting member between the hood and the casmg, coupling 'means detach-ably connecting the hood to the drinn cover, supporting stays on the hood, surrounding stuiing boxes for theadmission and eduction pipes, inovably secured to the stays, and manipulating and raising means connected to the stays.

in testimony whereof we afiix our signa` tures JOHANN FRIEDRCH MEYER. HANS LoKER\ CARL SCHMITZ. 

